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  2. Bat detector - Wikipedia

    en.wikipedia.org/wiki/Bat_detector

    Frequency division (FD) bat detectors synthesise a sound which is a fraction of the bat call frequencies, typically 1/10. This is done by converting the call into a square wave, otherwise called a zero crossing signal. This square wave is then divided using an electronic counter by 10 to provide another square wave.

  3. Doppler shift compensation - Wikipedia

    en.wikipedia.org/wiki/Doppler_shift_compensation

    When an echolocating bat approaches a target, its outgoing sounds return as echoes, which are Doppler shifted upward in frequency. In certain species of bats, which produce constant frequency (CF) echolocation calls, the bats compensate for the Doppler shift by changing their call frequency as they change speed towards a target.

  4. Animal echolocation - Wikipedia

    en.wikipedia.org/wiki/Animal_echolocation

    The term echolocation was coined by 1944 by the American zoologist Donald Griffin, who, with Robert Galambos, first demonstrated the phenomenon in bats. [1] [2] As Griffin described in his book, [3] the 18th century Italian scientist Lazzaro Spallanzani had, by means of a series of elaborate experiments, concluded that when bats fly at night, they rely on some sense besides vision, but he did ...

  5. Bat speed, blasts, swing length: Where do Ohtani, Betts ... - AOL

    www.aol.com/news/bat-speed-blasts-swing-length...

    The MLB's bat-tracking data shows that Shohei Ohtani's swing generates the most bat speed for the Dodgers, while Mookie Betts' swing squares up the most and Freddie Freeman's swing is the shortest.

  6. Bat species identification - Wikipedia

    en.wikipedia.org/wiki/Bat_species_identification

    This can be used to estimate the speed of a flying bat or to identify bats which are echolocating while roosting. A bat call from a bat approaching or departing at 6.8 metres per second (15 mph) calling at 50 kHz will typically show a doppler shift of +- 1 kHz and pro rats. This can cause uncertainty with some species such as Pipistrelles.

  7. Radar signal characteristics - Wikipedia

    en.wikipedia.org/wiki/Radar_signal_characteristics

    The pulse width (or pulse duration) of the transmitted signal is the time, typically in microseconds, each pulse lasts.If the pulse is not a perfect square wave, the time is typically measured between the 50% power levels of the rising and falling edges of the pulse.

  8. 23 Quiet Vibrators to Pleasure Yourself on the Down Low (or ...

    www.aol.com/22-quiet-vibrators-silent-self...

    Maude. This waterproof, 4.8-inch vibrator has three speeds that are easy to operate with a touch button at the base. It's designed for external and internal use, and comes with a discreet little ...

  9. AN/SPY-3 - Wikipedia

    en.wikipedia.org/wiki/AN/SPY-3

    Diagram of AN/SPY-3 vertical electronic pencil beam radar conex projections. X band functionality (8 to 12 GHz frequency range) is optimal for minimizing low-altitude propagation effects, narrow beam width for best tracking accuracy, wide frequency bandwidth for effective target discrimination, and the target illumination for SM-2 and Evolved Sea Sparrow Missiles (ESSM).

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